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Prostate

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https://www.readbyqxmd.com/read/28191652/goniothalamin-and-celecoxib-effects-during-aging-targeting-pro-inflammatory-mediators-in-chemoprevention-of-prostatic-disorders
#1
Larissa Akemi Kido, Fabio Montico, Débora Barbosa Vendramini-Costa, Ronaldo Aloise Pilli, Valeria Helena Alves Cagnon
BACKGROUND: Prostate is highly affected by aging, which lead to inflammatory disorders that can predispose to cancer development. Chemoprevention has emerged as a new therapeutic approach, intensifying studies evaluating the biological properties of new compounds. The aim of this study was to characterize the inflammatory responses in the prostate ventral lobe from senile mice treated with Goniothalamin (GTN), a promising natural compound with anti-inflammatory and antiproliferative properties...
February 13, 2017: Prostate
https://www.readbyqxmd.com/read/28191651/the-development-of-prostate-adenocarcinoma-in-a-transgender-male-to-female-patient-could-estrogen-therapy-have-played-a-role
#2
Asma Sharif, Neha R Malhotra, Andres M Acosta, Andre A Kajdacsy-Balla, Maarten Bosland, Grace Guzman, Gail S Prins, Michael R Abern
BACKGROUND: Prostate adenocarcinoma (PCa) is a rare diagnosis in the male to female transgender (MtFT) population with only a few case reports published in the current medical literature. Long standing beliefs of androgen suppression conferring a protective effect against prostate cancer development have been challenged by the literature citing adenocarcinoma development in the prostate of rodent models following combined estrogen and testosterone treatment. MATERIALS AND METHODS: We herein present a MtFT patient who presented with high grade PCa following 20 years of exogenous estrogen therapy...
February 13, 2017: Prostate
https://www.readbyqxmd.com/read/28181686/the-effect-of-a-histone-deacetylase-inhibitor-ar-42-on-canine-prostate-cancer-growth-and-metastasis
#3
Said M Elshafae, Nicole A Kohart, Lucas A Altstadt, Wessel P Dirksen, Thomas J Rosol
BACKGROUND: Canine prostate cancer (PCa) is an excellent preclinical model for human PCa. AR-42 is a histone deacetylase inhibitor (HDACi) developed at The Ohio State University that inhibits the proliferation of several cancers, including multiple myeloma, lung, and hepatocellular cancer. In this study, we investigated whether AR-42 would prevent or decrease. The growth and metastasis of a canine PCa (Ace-1 cells) to bone in vitro and in vivo. METHODS: Proliferation, cell viability, invasion, and metastasis of a canine prostate cancer cell line (Ace-1) were measured following treatment with AR-42...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28181685/effects-of-estrogen-receptor-%C3%AE-stimulation-in-a-rat-model-of-non-bacterial-prostatic-inflammation
#4
Shinsuke Mizoguchi, Kenichi Mori, Zhou Wang, Teresa Liu, Yasuhito Funahashi, Fuminori Sato, Donald B DeFranco, Naoki Yoshimura, Hiromitsu Mimata
BACKGROUND: There is increasing evidence showing that chronic non-bacterial prostatic inflammation is involved in the pathogenesis of benign prostatic hyperplasia (BPH) and male lower urinary tract symptoms (LUTS). It has also been reported that estrogen receptor β (ERβ) could have an immunoprotective role in prostatic tissue. Therefore, we investigated the effect of ERβ-activation on not only prostatic inflammation, but also bladder overactive conditions in a rat model with nonbacterial prostatic inflammation...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28181681/appearance-of-high-endothelial-venule-like-vessels-in-benign-prostatic-hyperplasia-is-associated-with-lower-urinary-tract-symptoms
#5
So Inamura, Tomochika Shinagawa, Hitomi Hoshino, Yasuhiro Sakai, Yoshiaki Imamura, Osamu Yokoyama, Motohiro Kobayashi
BACKGROUND: Chronic prostatic inflammation is implicated in the pathogenesis of benign prostatic hyperplasia (BPH)-associated lower urinary tract symptoms (LUTS). Previous studies evaluated the degree of chronic prostatic inflammation based on histological scores, which may contain subjective factors. We previously demonstrated that the number of high endothelial venule (HEV)-like vessels correlates positively with the magnitude of inflammation in chronic inflammatory gastrointestinal diseases...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28181678/safety-and-immunological-efficacy-of-a-dna-vaccine-encoding-the-androgen-receptor-ligand-binding-domain-ar-lbd
#6
Brian M Olson, Eric S Bradley, Thomas Sawicki, Weixiong Zhong, Erik A Ranheim, Jordan E Bloom, Viswa T Colluru, Laura E Johnson, Brian T Rekoske, Jens C Eickhoff, Douglas G McNeel
BACKGROUND: The androgen receptor (AR) is a key oncogenic driver of prostate cancer, and has been the primary focus of prostate cancer treatment for several decades. We have previously demonstrated that the AR is also an immunological target antigen, recognized in patients with prostate cancer, and targetable by means of vaccines in rodent models with delays in prostate tumor growth. The current study was performed to determine the safety and immunological efficacy of a GMP-grade plasmid DNA vaccine encoding the ligand-binding domain (LBD) of the AR, pTVG-AR...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28181675/a-placebo-controlled-double-blinded-randomized-pilot-study-of-combination-phytotherapy-in-biochemically-recurrent-prostate-cancer
#7
M Diana van Die, Scott G Williams, Jon Emery, Kerry M Bone, Jeremy M G Taylor, Elizabeth Lusk, Marie V Pirotta
BACKGROUND: Men with biochemical recurrence of prostate cancer following local therapies often use natural supplements in an attempt to delay metastases and/or avoid the need for more aggressive treatments with undesirable side-effects. While there is a growing body of research into phytotherapeutic agents in this cohort, with some promising results, as yet no definitive recommendations can be made. This pilot study was undertaken to assess the feasibility of a fully-powered study to examine the effects of this phytotherapeutic intervention (containing turmeric, resveratrol, green tea and broccoli sprouts) on PSA doubling time in men with biochemical recurrence with a moderate PSA rise rate...
February 9, 2017: Prostate
https://www.readbyqxmd.com/read/28168724/identification-of-fibulin-1-as-a-human-bone-marrow-stromal-hs-5-sell-derived-factor-that-induces-human-prostate-cancer-cell-death
#8
Kornkamon Lertsuwan, Leila H Choe, Irene R Marwa, Kelvin Lee, Robert A Sikes
BACKGROUND: Previous studies showed that human bone marrow stromal HS-5 cells secreted unidentified factor(s) inducing PCa cell death. Herein, the HS-5-derived factor (HS-5 DF) was characterized and identified. METHODS: Conditioned media from confluent HS-5 cells were collected and modified for biochemical characteristic testing of HS-5 DF. Cell survival was measured by apoptosis assay and live/dead assay. Fibulin-1 was identified from gel electrophoresis and mass spectrometry...
February 7, 2017: Prostate
https://www.readbyqxmd.com/read/28168722/androgen-deprivation-accelerates-the-prostatic-urethra-wound-healing-after-thulium-laser-resection-of-the-prostate-by-promoting-re-epithelialization-and-regulating-the-macrophage-polarization
#9
Xing-Jie Wang, Jian Zhuo, Guang-Heng Luo, Yi-Ping Zhu, Dian-Jun Yu, Rui-Zhe Zhao, Chen-Yi Jiang, Yun-Feng Shi, Hao Li, Lei Chen, Kui-Yuan Hao, Xia Han, Sheng Zhao, Xiao-Yu Bei, Yi-Feng Jing, Shu-Jie Xia
BACKGROUND: Complications after a thulium laser resection of the prostate (TmLRP) are related to re-epithelialization of the prostatic urethra. Since prostate growth and development are induced by androgen, the aim of this study was to determine the role and explore the mechanism of androgen in wound healing of the prostatic urethra. METHODS: Beagles that received TmLRPs were randomly distributed into a castration group, a testosterone undecanoate (TU) group, and a control group...
February 7, 2017: Prostate
https://www.readbyqxmd.com/read/28156003/population-based-validation-of-the-2014-isup-gleason-grade-groups-in-patients-treated-with-radical-prostatectomy-brachytherapy-external-beam-radiation-or-no-local-treatment
#10
Raisa S Pompe, Helen Davis-Bondarenko, Emanuele Zaffuto, Zhe Tian, Shahrokh F Shariat, Sami-Ramzi Leyh-Bannurah, Jonas Schiffmann, Fred Saad, Hartwig Huland, Markus Graefen, Derya Tilki, Pierre I Karakiewicz
BACKGROUND: To test discriminant ability of the 2014 ISUP Gleason grade groups (GGG) for prediction of prostate cancer specific mortality (PCSM) after radical prostatectomy (RP), brachytherapy (BT), external beam radiation (EBRT) or no local treatment (NLT) relative to traditional Gleason grading (TGG). METHODS: In the Surveillance, Epidemiology, and End Results (SEER)-database (2004-2009), 2,42,531 non-metastatic prostate cancer (PCa) patients were identified, who underwent local treatment (RP, BT, EBRT only) or NLT...
February 3, 2017: Prostate
https://www.readbyqxmd.com/read/28156002/lucap-prostate-cancer-patient-derived-xenografts-reflect-the-molecular-heterogeneity-of-advanced-disease-an-d-serve-as-models-for-evaluating-cancer-therapeutics
#11
Holly M Nguyen, Robert L Vessella, Colm Morrissey, Lisha G Brown, Ilsa M Coleman, Celestia S Higano, Elahe A Mostaghel, Xiaotun Zhang, Lawrence D True, Hung-Ming Lam, Martine Roudier, Paul H Lange, Peter S Nelson, Eva Corey
BACKGROUND: Metastatic prostate cancer is a common and lethal disease for which there are no therapies that produce cures or long-term durable remissions. Clinically relevant preclinical models are needed to increase our understanding of biology of this malignancy and to evaluate new agents that might provide effective treatment. Our objective was to establish and characterize patient-derived xenografts (PDXs) from advanced prostate cancer (PC) for investigation of biology and evaluation of new treatment modalities...
February 3, 2017: Prostate
https://www.readbyqxmd.com/read/28155999/accuracy-of-grading-gleason-score-7-prostatic-adenocarcinoma-on-needle-biopsy-influence-of-percent-pattern-4-and-other-histological-factors
#12
Abdelrazak Meliti, Evita Sadimin, Mario Diolombi, Francesca Khani, Jonathan I Epstein
BACKGROUND: Recognition of Gleason pattern 4 in prostatic needle biopsies is crucial for both prognosis and therapy. Recently, it has been recommended to record percent pattern 4 when Gleason score 7 cancer is the highest grade in a case. METHODS: Four hundred and five prostate needle core biopsies received for a second opinion at our institution from February-June, 2015 were prospectively diagnosed with prostatic adenocarcinoma Gleason score 7 as the highest score on review by a consultant urological pathologist...
February 3, 2017: Prostate
https://www.readbyqxmd.com/read/28145028/effects-of-steroidal-antiandrogen-or-5-alpha-reductase-inhibitor-on-prostate-tissue-hormone-content
#13
Yasuhiro Shibata, Seiji Arai, Yoshiyuki Miyazawa, Takahiro Shuto, Masashi Nomura, Yoshitaka Sekine, Hidekazu Koike, Hiroshi Matsui, Kazuto Ito, Kazuhiro Suzuki
BACKGROUND: The effects of a steroidal antiandrogen (AA) and 5-alpha-reductase inhibitor (5ARI) on prostate tissue hormone content and metabolism are not fully elucidated. The objective of this study is to investigate the hormone content and metabolism of the prostate tissues of patients treated with AA or 5ARI using the ultra-sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) method. METHODS: Thirty-nine patients with benign prostatic hyperplasia (BPH) undergoing transurethral surgery were included...
February 1, 2017: Prostate
https://www.readbyqxmd.com/read/28144985/socs3-immunohistochemical-expression-seems-to-support-the-2005-and-2014-international-society-of-urological-pathology-isup-modified-gleason-grading-system
#14
Francesco Pierconti, Maurizio Martini, Tonia Cenci, Gian Luigi Petrone, Riccardo Ricci, Emilio Sacco, Pier Francesco Bassi, Luigi Maria Larocca
BACKGROUND: In the 2014, The International Society of Urological Pathology (ISUP) consensus conference update the grading of prostate, last revised in 2005. In this study we evaluate the SOCS3 immunohistochemical protein expression in different Gleason prostatic adenocarcinoma: classical Gleason grade 3, classical Gleason grade 3 upgraded to Gleason grade 4 according to the ISUP modifications and classical and modified Gleason grade 4. The major conclusions were: (i) Cribriform glands should be assigned a Gleason pattern 4, regardless of morphology; (ii) Glomeruloid glands should be assigned a Gleason pattern 4, regardless of morphology; (iii) Grading of mucinous carcinoma of the prostate should be based on its underlying growth pattern rather than all as pattern 4; and (iv) Intraductal carcinoma of the prostate without invasive carcinoma should not assigned Gleason grade and a comment about aggressive carcinoma probably associated should be made...
February 1, 2017: Prostate
https://www.readbyqxmd.com/read/28144973/minnelide-inhibits-androgen-dependent-castration-resistant-prostate-cancer-growth-by-decreasing-expression-of-androgen-receptor-full-length-and-splice-variants
#15
Sumit Isharwal, Shrey Modi, Nivedita Arora, Charles Uhlrich, Bhuwan Giri, Usman Barlass, Ayman Soubra, Rohit Chugh, Scott M Dehm, Vikas Dudeja, Ashok Saluja, Sulagna Banerjee, Badrinath Konety
BACKGROUND: With almost 30,000 deaths per year, prostate cancer is the second-leading cause of cancer-related death in men. Androgen Deprivation Therapy (ADT) has been the corner stone of prostate cancer treatment for decades. However, despite an initial response of prostate cancer to ADT, this eventually fails and the tumors recur, resulting in Castration Resistant Prostate Cancer (CRPC). Triptolide, a diterpene triepoxide, has been tested for its anti-tumor properties in a number of cancers for over a decade...
February 1, 2017: Prostate
https://www.readbyqxmd.com/read/28144969/high-levels-of-the-ar-v7-splice-variant-and-co-amplification-of-the-golgi-protein-coding-yipf6-in-ar-amplified-prostate-cancer-bone-metastases
#16
Erik Djusberg, Emma Jernberg, Elin Thysell, Irina Golovleva, Pia Lundberg, Sead Crnalic, Anders Widmark, Anders Bergh, Maria Brattsand, Pernilla Wikström
BACKGROUND: The relation between androgen receptor (AR) gene amplification and other mechanisms behind castration-resistant prostate cancer (CRPC), such as expression of constitutively active AR variants and steroid-converting enzymes has been poorly examined. Specific aim was to examine AR amplification in PC bone metastases and to explore molecular and functional consequences of this, with the long-term goal of identifying novel molecular targets for treatment. METHODS: Gene amplification was assessed by fluorescence in situ hybridization in cryo-sections of clinical PC bone metastases (n = 40) and by PCR-based copy number variation analysis...
February 1, 2017: Prostate
https://www.readbyqxmd.com/read/28144967/oncological-outcomes-after-radical-prostatectomy-for-high-risk-prostate-cancer-based-on-new-gleason-grouping-system-a-validation-study-from-university-of-southern-california-with-3-755-cases
#17
Hooman Djaladat, Erfan Amini, Weichen Xu, Jie Cai, Siamak Daneshmand, Gary Lieskovsky
BACKGROUNDS: To assess the prognostic value of new Gleason grade grouping system in high-risk prostate cancer patients, we compared oncological outcomes after radical prostatectomy for patients with Gleason score 8 versus 9-10. METHODS: Between 1987 and 2008, 3,755 men underwent radical prostatectomy with curative intent at University of Southern California. Patients who had Gleason score 8-10 at final histopathological evaluation (pT2-4N0) were included in this study...
February 1, 2017: Prostate
https://www.readbyqxmd.com/read/28117495/elevated-serum-psa-is-associated-with-human-herpesvirus-8-infection-and-increased-circulating-cytokine-levels-in-men-from-tobago
#18
Jill D Henning, Jaideep M Karamchandani, Luis A Bonachea, Clareann H Bunker, Alan L Patrick, Frank J Jenkins
BACKGROUND: Serum-prostate specific antigen (PSA) levels have been used for many years as a biomarker for prostate cancer. This usage is under scrutiny due to the fact that elevated PSA levels can be caused by other conditions such as benign prostatic hyperplasia and infections of or injury to the prostate. As a result, the identification of specific pathogens capable of increasing serum levels of PSA is important. A potential candidate responsible for elevated PSA is human herpesvirus 8 (HHV-8)...
January 24, 2017: Prostate
https://www.readbyqxmd.com/read/28116812/genome-wide-measures-of-peripheral-blood-dna-methylation-and-prostate-cancer-risk-in-a-prospective-nested-case-control-study
#19
Liesel M FitzGerald, Haroon Naeem, Enes Makalic, Daniel F Schmidt, James G Dowty, Jihoon E Joo, Chol-Hee Jung, Julie K Bassett, Pierre-Antoine Dugue, Jessica Chung, Andrew Lonie, Roger L Milne, Ee Ming Wong, John L Hopper, Dallas R English, Gianluca Severi, Laura Baglietto, John Pedersen, Graham G Giles, Melissa C Southey
BACKGROUND: Global measures of peripheral blood DNA methylation have been associated with risk of some malignancies, including breast, bladder, and gastric cancer. Here, we examined genome-wide measures of peripheral blood DNA methylation in prostate cancer and its non-aggressive and aggressive disease forms. METHODS: We used a matched, case-control study of 687 incident prostate cancer samples, nested within a larger prospective cohort study. DNA methylation was measured in pre-diagnostic, peripheral blood samples using the Illumina Infinium HM450K BeadChip...
January 24, 2017: Prostate
https://www.readbyqxmd.com/read/28116771/non-adrenergic-tamsulosin-insensitive-smooth-muscle-contraction-is-sufficient-to-replace-%C3%AE-1-adrenergic-tension-in-the-human-prostate
#20
Martin Hennenberg, Alice Acevedo, Nicolas Wiemer, Aysenur Kan, Alexander Tamalunas, Yiming Wang, Qingfeng Yu, Beata Rutz, Anna Ciotkowska, Annika Herlemann, Frank Strittmatter, Christian G Stief, Christian Gratzke
BACKGROUND: Lower urinary tract symptoms (LUTS) suggestive of benign prostatic hyperplasia may be caused by prostate smooth muscle contraction. Although α1 -blockers may improve symptoms by prostate smooth muscle relaxation, their efficacy is limited. This may be explained by non-adrenergic mediators causing contraction in parallel to α1 -adrenoceptors. However, little is known about the relevance and cooperative actions of non-adrenergic mediators in the prostate. METHODS: Prostate tissues were obtained from radical prostatectomy (n = 127 patients)...
January 24, 2017: Prostate
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